Bitcoin passes $60,000 for first time

Last month Elon Musk's electric carmaker Tesla invested $1.5 billion in the virtual unit, while Twitter chief Jack Dorsey and rap mogul Jay-Z said they are creating a fund aimed at making Bitcoin "the internet's currency".

Others jumping on the bandwagon include Wall Street player BNY Mellon, investment fund giant BlackRock and credit card titan Mastercard.

Bitcoin, which was launched back in 2009, hit the headlines in 2017 after soaring from less than $1,000 in January to almost $20,000 in December of the same year.

The virtual bubble then burst in subsequent days, with bitcoin's value then fluctuating wildly before sinking below $5,000 by October 2018.

However the last year's rise has been more steady, with investors and Wall Street finance giants wooed by dizzying growth, the opportunity for profit and asset diversification, and a safe store of value to guard against inflation.

Bitcoins are traded via a decentralised registry system known as a blockchain.

The system requires massive computer processing power in order to manage and implement transactions.

That power is provided by "miners", who do so in the hope they will receive new bitcoins for validating transaction data.